BUKH solas marine engine

125ps (92kW) ace. to ISO 8665

The U-engine family brings to boating the additional benefits of diesel power which, in the past, were limited to use gasoline engines.

In features a compact rail electronic fuel injection (CRDi) with the latest generation computer controlled engine management system.

A variable geometry turbocharger (VGT) coupled with the intercooler provides a superb acceleration as well as optimal boost at cruise – all while keeping fuel consumption under tight control. Available for inboard and jet applications, wheater the needs is for new builds for repower, the U125 is ready to serve.

Marine Gear
Model ZF 45 C for U125J:
Gear Ratio 1:1
Weight [kg] 31
Standard equipment


  • Cast iron engine cylinder block
  • Aluminium head
  • Oil cooled piston
  • In line 4, 16-valve DOHC
  • Hydraulic lash adjusters
  • Integrated water jacket
  • Hydraulic timing chain auto tensioner
  • SIngle serpentine belt system
  • Drive belt auto tensioner

Engine Mounting

  • Adjustable engine mount

Lubrication System

  • Electric oil extraction pump
  • Crankcase gases vented into air inlet

Fuel System

  • Common rail direct injection (CRDi)-Solenoid injector
  • Fuel filter with sensor detecting water in fuel
  • Dual pressure control valve

Electrical System

  • 12 volt system and 130A alternator
  • Auxiliary engine stop button
  • Ceramic glow plugs for trouble-free cold start
  • NMEA2000 Converter (Optional)
  • Electronic control system (Optional)

Cooling System

  • Seawater cooled intercooler, heat exchanger
  • Corrosion resistant material for the seawater circuit

Engine Operating Indicator (EOI)

  • Engine self protection and diagnosis
  • Display CAN information
  • Display engine diagnostic error code
  • Audible alarm and control lamps

Air inlet System

  • Reusable air filter
  • Crankcase gases vented into the air inlet

Exhaust System

  • Engine coolant cooled exhaust manifold
  • Seawater cooled exhaust elbow


  • Variable Geometry Turbine (VGT)

Engine Coupler

  • Life-Iong and rattle free rubber roller coupler for sterndrive


  • EPA Tier 3, BSO and RCD compliant

Pass-by Noise Level

  • 67.0dB (RCD Standard 75dB)

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